Path: utzoo!utgpu!jarvis.csri.toronto.edu!clyde.concordia.ca!uunet!zephyr.ens.tek.com!tektronix!psueea!parsely!agora!billsey From: billsey@agora.UUCP (Bill Seymour) Newsgroups: comp.sys.amiga.tech Subject: Re: A2620/30 Message-ID: <1801@agora.UUCP> Date: 13 Jan 90 20:32:03 GMT References: <1990Jan12.222613.28109@athena.mit.edu> Reply-To: billsey@.UUCP (Bill Seymour) Organization: Organization? You've got to be kidding! Lines: 81 In article <1990Jan12.222613.28109@athena.mit.edu: rlcarr@space.mit.edu (the Wizard of Speed and Time) writes: :I have almost decided to buy either an A2620 or A2630 accelerator board. :My current setup: :A2000 w/Super Agnus and 1 meg chip RAM :4 meg of fast RAM :HardFrame/2000 SCSI controller : :(1) Will the A2620 allow you to boot off the 68000? What about the A2630? Yes on both counts. :(2) Can KickStart ROM be copied to the 32 bit ram on the A2620? What about : the A2630? Again yes on both. Use SetCPU FASTROM. :(3) How much faster (overall, graphics, hard drive I/O, : and math grinding) is the A2620 compared to my A2000? How about : the A2630 compared to my A2000? The A2630 compared to the A2620? I don't have a 2620, but the most accurate speed test I have (Speed, by Jez San or Argonaut Software) shows me at 6 times the speed of a 1000 and 2 times the speed of a 2620. My HDs now all run at the fastest I'd expect them to... ~600K/sec with RLL and ~400K/sec with MFM. Note I have a Supra Wordsync nonDMA controller, so your speed *will* vary from mine. :(4) What kind of RAM does the A2620 use? The A2630? How hard is it to find? : How hard to install? They both use 256Kx4 ZIPs at 100ns. Pretty easy to find and not too expensive. (You should be able to find them for less than $15 each.) :(5) If I someday ever want to run Amiga UNIX, can I run it with an A2620? : How about with an A2630 (assuming I get a big enough hard drive,of course)? Don't know here for sure, but the first beta AMIX machines were used with 2620s. The release might require a 2630. I know it currently requires C=s HD controller and a tape drive. :(6) Can I put hard drive buffers in 32bit ram? Right now I can put hard drive : buffers in my fast ram. Youu should be able to. :(7) Does the 32bit RAM autoconfig? Yes. The 2630 also has a RAM expansion buss for piggybacked ram boards. My guess is that boards built for this buss will not be autoconfig. But, you can put 64 meg of ram on it! :(8) will the A2620 be able to access my 4 meg of fast ram? What about : the A2630? Yes to both. :(10) is there any way to force a program to be placed in 32 bit RAM? : can you force a program into 16 bit RAM? I believe there's a PD utility for individually setting memory priority for each bank of memory on the system. Kind of a super FastMemFirst. Judicious use of that would allow youto choose where pretty much anything goes. :That's all for now - but if you can think of other information, please :pass that along too. All I can add is that I *like* my 2630! Things are a joy once more! :Thanks! : :-- :Rich Carreiro - Most Biased Boston Celtics Fan! "So long, farewell, and may :ARPA: rlcarr@space.mit.edu the forces of evil become :UUCP: ...!mit-eddie!space.mit.edu!rlcarr confused on the way to your :BITNET: rlcarr@space.mit.edu door!" - George Carlin -- -Bill Seymour ...tektronix!reed!percival!agora!billsey ============================================================================= Bejed, Inc. NES, Inc. Northwest Amiga Group At Home Sometimes (503) 281-8153 (503) 246-9311 (503) 656-7393 BBS (503) 640-0842